Genuine Parts Company
MX ˙ BMV ˙ US3724601055
SecurityMX:GPC / Genuine Parts Company
InstitutionMariner, LLC
Latest Disclosed Ownership84,897 shares
Latest Disclosed Value $ 8,976,634
Mariner, LLC reports 61.11% increase in ownership of GPC / Genuine Parts Company

On May 13, 2026 - Mariner, LLC filed a 13F-HR form disclosing ownership of 84,897 shares of Genuine Parts Company (MX:GPC) valued at $8,976,634 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 52,695 shares of Genuine Parts Company. This represents a change in shares of 61.11% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F GENUINE PARTS COM 372460105 84,897 32,202 61.11 8,977 38.56 0.0086
2026-02-13 2025-12-31 13F GENUINE PARTS COM 372460105 52,695 2,002 3.95 6,478 -7.79 0.0077
2025-11-14 2025-09-30 13F GENUINE PARTS COM 372460105 50,693 -11,153 -18.03 7,026 -6.36 0.0091
2025-08-14 2025-06-30 13F GENUINE PARTS COM 372460105 61,846 -6,412 -9.39 7,503 -7.75 0.0108
2025-05-15 2025-03-31 13F GENUINE PARTS COM 372460105 68,258 -8,817 -11.44 8,132 -9.63 0.0135
2025-02-13 2024-12-31 13F GENUINE PARTS COM 372460105 77,075 -17,197 -18.24 8,999 -31.67 0.0151
2024-11-13 2024-09-30 13F GENUINE PARTS COM 372460105 94,272 -1,806 -1.88 13,170 -0.90 0.0234
2024-08-13 2024-06-30 13F GENUINE PARTS COM 372460105 96,078 661 0.69 13,289 -10.10 0.0258
2024-05-15 2024-03-31 13F GENUINE PARTS COM 372460105 95,417 -2,284 -2.34 14,783 9.25 0.0306
2024-02-14 2023-12-31 13F GENUINE PARTS COM 372460105 97,701 -2,658 -2.65 13,532 -6.61 0.0321
2023-11-13 2023-09-30 13F GENUINE PARTS COM 372460105 100,359 -1,251 -1.23 14,490 -15.74 0.0389
2023-08-11 2023-06-30 13F GENUINE PARTS COM 372460105 101,610 -3,837 -3.64 17,195 101,047.06 0.0459
2023-05-15 2023-03-31 13F GENUINE PARTS COM 372460105 105,447 -2,822 -2.61 18 -99.91 0.0513
2023-02-14 2022-12-31 13F GENUINE PARTS COM 372460105 108,269 5,206 5.05 18,785 22.07 0.0604
2022-11-10 2022-09-30 13F GENUINE PARTS COM 372460105 103,063 304 0.30 15,389 12.60 0.0615
2022-08-15 2022-06-30 13F GENUINE PARTS COM 372460105 102,759 349 0.34 13,667 5.90 0.0561
2022-05-13 2022-03-31 13F GENUINE PARTS COM 372460105 102,410 63,590 163.81 12,906 137.11 0.0487
2022-02-14 2021-12-31 13F GENUINE PARTS COM 372460105 38,820 20,339 110.05 5,443 142.99 0.0230
2021-11-15 2021-09-30 13F GENUINE PARTS COM 372460105 18,481 412 2.28 2,240 -1.97 0.0117
2021-08-24 2021-06-30 13F GENUINE PARTS COM 372460105 18,069 2,743 17.90 2,285 28.95 0.0142
2021-05-07 2021-03-31 13F GENUINE PARTS COM 372460105 15,326 -179 -1.15 1,772 13.81 0.0124
2021-02-16 2020-12-31 13F GENUINE PARTS COM 372460105 15,505 4,312 38.52 1,557 46.20 0.0119
2020-11-13 2020-09-30 13F GENUINE PARTS COM 372460105 11,193 425 3.95 1,065 13.78 0.0100
2020-08-14 2020-06-30 13F GENUINE PARTS COM 372460105 10,768 -102 -0.94 936 27.87 0.0094
2020-05-14 2020-03-31 13F GENUINE PARTS COM 372460105 10,870 10,870 0.95 732 -21.79 0.0091
2019-11-13 2019-09-30 13F GENUINE PARTS COM 372460105 0 -6,234 -100.00 0 -100.00
2019-08-14 2019-06-30 13F GENUINE PARTS COM 372460105 6,234 283 4.76 646 -3.15 0.0077
2019-05-15 2019-03-31 13F GENUINE PARTS COM 372460105 5,951 -256 -4.12 667 11.91 0.0095
2019-02-13 2018-12-31 13F GENUINE PARTS COM 372460105 6,207 2,838 84.24 596 77.91 0.0106
2018-11-14 2018-09-30 13F GENUINE PARTS COM 372460105 3,369 574 20.54 335 30.35 0.0086
2018-08-14 2018-06-30 13F GENUINE PARTS COM 372460105 2,795 2,795 -17.04 257 -23.28 0.0073
2017-08-11 2017-06-30 13F GENUINE PARTS COM 372460105 0 -3,002 -100.00 0 -100.00
2017-05-15 2017-03-31 13F GENUINE PARTS COM 372460105 3,002 471 18.61 277 14.46 0.0121
2017-02-14 2016-12-31 13F GENUINE PARTS COM 372460105 2,531 -2,320 -47.83 242 -50.31 0.0112
2016-11-14 2016-09-30 13F GENUINE PARTS COM 372460105 4,851 2,767 132.77 487 130.81 0.0235
2016-08-12 2016-06-30 13F GENUINE PARTS COM 372460105 2,084 -69 -3.20 211 -1.40 0.0114
2016-05-13 2016-03-31 13F GENUINE PARTS COM 372460105 2,153 2,153 3.31 214 1.42 0.0127
2016-02-16 2015-12-31 13F GENUINE PARTS COM 372460105 0 -4,257 -100.00 0 -100.00
2015-11-16 2015-09-30 13F GENUINE PARTS COM 372460105 4,257 80 1.92 353 -5.61 0.0157
2015-08-17 2015-06-30 13F Genuine Parts COS 372460105 4,177 4,177 -1.88 374 5.95 0.0173
2014-11-13 2014-09-30 13F GENUINE PARTS COM 372460105 0 -8,706 -100.00 0 -100.00
2014-08-21 2014-06-30 13F GENUINE PARTS COM 372460105 8,706 0 0.00 764 1.06 0.0847
2014-05-08 2014-03-31 13F GENUINE PARTS COM 372460105 8,706 0 0.00 756 4.42 0.0973
2014-02-14 2013-12-31 13F GENUINE PARTS COM 372460105 8,706 -210 -2.36 724 0.42 0.0907
2013-11-14 2013-09-30 13F GENUINE PARTS COM 372460105 8,916 8,916 721 0.1329
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.